Subclade K, a variant of the influenza A strain H3N2, is being detected in the U.S. This is the same variant that experts say ...

The “severely ill” Washington man, infected with H5N5, an avian influenza virus, was hospitalized with a high fever, ...

As Covid-19 began to spread widely in 2020, people took protective measures such as masking, washing hands and avoiding contact with others — and flu infections plummeted. Although flu has rebounded, ...

A new influenza A strain subclade K is circulating due to H3N2 picking up 7 mutations this Summer. Will this lead to a worse ...

As bird flu continues to cause problems around the world, a patient in the US has tested positive for H5N5, a subtype of ...

That late spike in the H3N2 subtype of influenza A comes amid warnings that mutations of the virus overseas are behind an ...